2021 FORD F-450 fuel cap

Exceptions
Axle and Transfer Case Maintenance
Axle(s) and transfer case, 4X4 only, fluid
changes or level checks are not required
unless a leak is suspected or the assembly
has been submerged in water. During long
periods of trailer towing with outside
temperatures above 70°F (21°C) or at
wide-open throttle for long periods above
45 mph (72 km/h)
, change the rear axle
fluid every 30,000 mi (48,000 km) if the
rear axle is filled with non-synthetic fluid.
This interval can be waived and the
150,000 mi (240,000 km) service interval
can continue if the rear axle is filled with
75W140 synthetic gear fluid meeting Ford
specification WSL-M2C192-A, part number
XY-75W140-QL, or equivalent. Add friction
modifier XL-3 (EST-M2C118-A) or
equivalent for complete refill of
Traction-Lok rear axles. See
Capacities
and Specifications (page 441).
Additional Axle Maintenance for Dual
Rear Wheels
Change the rear axle fluid every
250,000 mi (400,000 km)
under normal
driving conditions on all commercial
applications. When you operate your
vehicle at or near maximum gross vehicle
weights, change the rear axle fluid every
60,000 mi (96,000 km)
. In addition,
follow this 60,000 mi (96,000 km)
schedule when you operate your vehicle
under the special operating conditions
where noted. California Fuel Filter Replacement
If you register your vehicle in California, the
California Air Resources Board has
determined that the failure to perform this
maintenance item does not nullify the
emission warranty or limit recall liability
before the completion of your vehicle's
useful life. Ford Motor Company, however,
urges you to have all recommended
maintenance services performed at the
specified intervals and to record all vehicle
service.
Hot Climate Oil Change Intervals
Vehicles operating in the Middle East,
North Africa, Sub-Saharan Africa or
locations with similar climates using an
American Petroleum Institute (API)
Certified for Gasoline Engines (Certification
mark) oil of SM or SN quality, the normal
oil change interval is 3,000 mi (5,000 km).
If the available API SM or SN oils are not
available, then the oil change interval is
2,000 mi (3,000 km)
.
Engine Air Filter and Cabin Air Filter
Replacement
The life of the engine air filter and cabin air
filter is dependent on exposure to dusty
and dirty conditions. Vehicles operated in
these conditions require frequent
inspection and replacement of the engine
air filter and cabin air filter.
Diesel Particulate Filter
Over time, a slight amount of ash builds
up in the diesel particulate filter, which is
not removed during the regeneration
process. The filter may need to be replaced
with a new or remanufactured part at
approximately 250,000 mi (400,000 km).
Actual mileage varies depending on engine
and vehicle operating conditions.
582
Super Duty (TFE) Canada/United States of America, enUSA, Edition date: 202008, Third-Printing- Scheduled Maintenance

D
Data Recording..................................................11
Comfort, Convenience and Entertainment
Data....................................................................... 13
Event Data................................................................ 13
Service Data............................................................ 12
Services That Third Parties Provide...............14
Services That We Provide.................................. 14
Vehicles With a Modem...................................... 14
Vehicles With an Emergency Call System.................................................................. 15
Vehicles With SYNC............................................. 14
Daytime Running Lamps - Vehicles With: Configurable Daytime Running
Lamps.............................................................88
Daytime Running Lamps - Vehicles With: Daytime Running Lamps (DRL)............89
Declaration of Conformity.......................646 Radio Frequency Statement........................ 646
Diesel Exhaust Fluid Capacity and Specification..............................................462
Diesel Particulate Filter.............................202 Oxidation Catalytic Converter and Diesel
Particulate Filter System........................... 202
Regeneration....................................................... 202
Digital Radio...................................................481 HD Radio Reception and Station
Troubleshooting............................................ 483
Directing the Flow of Air.............................145 Directing Air to the Footwell Air
Vents................................................................... 145
Directing Air to the Instrument Panel Air Vents................................................................... 145
Directing Air to the Windshield Air Vents................................................................... 145
Direction Indicators
.......................................90
Doors and Locks.............................................66
Draining the Fuel Filter Water Trap - 6.7L Diesel..............................................................361
Draining the Diesel Fuel Conditioner Module.............................................................. 362
Filter Location..................................................... 362
Drive Control.................................................268 Selectable Drive Modes.................................. 268
Driver Alert.....................................................250 Using Driver Alert............................................... 250Driver and Passenger Airbags...................46
Children and Airbags............................................ 51
Passenger Airbag On and Off Switch .........46
Proper Driver and Front Passenger Seating Adjustment....................................................... 50
Driving Aids....................................................250
Driving Hints....................................................317
Driving Through Water
...............................320
For Vehicles without Tremor Off-Road
Package............................................................ 320
For Vehicles with Tremor Off-Road Package............................................................. 321
DRL See: Daytime Running Lamps - Vehicles With:
Configurable Daytime Running
Lamps................................................................. 88
See: Daytime Running Lamps - Vehicles With: Daytime Running Lamps (DRL)................89
E
Economical Driving
.......................................317
Electromagnetic Compatibility...............618
Electronic Locking Differential.................221 Activating the Electronic Locking
Differential........................................................ 221
Operating ELD With a Spare or Mismatched Tires.................................................................... 222
Electronic Tailgate...........................................71 With the Outside Control Button..................... 71
With the Remote Control................................... 71
Emission Law
.................................................194
Noise Emissions Warranty, Prohibited
Tampering Acts and Maintenance..........195
Tampering With a Noise Control System............................................................... 194
Enabling Remote Start
..............................140
End User License Agreement...................621 VEHICLE SOFTWARE END USER LICENSE
AGREEMENT (EULA) .................................. 621
Engine Block Heater
....................................182
Using the Engine Block Heater...................... 183
Engine Coolant Check - 6.2L..................364 Adding Coolant.................................................. 364
Engine Coolant Temperature Management.................................................. 367
Fail-Safe Cooling............................................... 366
Recycled Coolant.............................................. 365
651
Super Duty (TFE) Canada/United States of America, enUSA, Edition date: 202008, Third-Printing- Index

Severe Climates.................................................
365
Engine Coolant Check - 6.7L Diesel............................................................368
Adding Coolant.................................................. 368
Coolant Change................................................... 371
Engine and Secondary Cooling System Refill Procedure............................................. 370
Engine-driven Cooling Fan.............................. 371
Recycled Coolant............................................... 370
Severe Climates................................................... 371
Engine Coolant Check - 7.3L.....................371 Adding Coolant................................................... 372
Coolant Change.................................................. 374
Engine Coolant Temperature Management.................................................. 375
Engine-driven Cooling Fan (Fan Clutch).............................................................. 374
Fail-Safe Cooling................................................ 374
Recycled Coolant............................................... 373
Severe Climates.................................................. 374
Engine Emission Control...........................194
Engine Idle Shutdown.................................182
Engine Immobilizer See: Passive Anti-Theft System..................... 76
Engine Oil Capacity and Specification - 6.2L................................................................449
Alternative Engine Oil for Extremely Cold Climates ........................................................... 450
Engine Oil Capacity and Specification - 6.7L Diesel...................................................450
Alternative Engine Oil for Biodiesel Fuel Blends (B20 Max)........................................ 452
Alternative Engine Oil for Extremely Cold Climates........................................................... 452
Alternative Engine Oil for Severe Duty Service.............................................................. 453
Engine Oil............................................................. 450
Engine Oil Capacity and Specification - 7.3L.................................................................453
Alternative Engine Oil for Extremely Cold Climates........................................................... 454
Engine Oil Check - 6.2L..............................352 Adding Engine Oil.............................................. 353
Engine Oil Check - 6.7L Diesel................354 Adding Engine Oil.............................................. 354
Engine lubrication for severe service operation ......................................................... 355Engine Oil Check - 7.3L..............................355
Adding Engine Oil.............................................. 355
Engine Oil Dipstick - 6.2L..........................352
Engine Oil Dipstick - 6.7L Diesel.............352
Engine Oil Dipstick - 7.3L...........................352
Engine Specifications - 6.2L.....................441 Drivebelt Routing................................................ 441
Engine Specifications - 6.7L Diesel.......441 Drivebelt Routing............................................... 442
Engine Specifications - 7.3L.....................442 Drivebelt Routing............................................... 443
Entertainment................................................521 AM/FM Radio...................................................... 522
Apps....................................................................... 530
CD........................................................................\
.... 528
HD Radio ™ Information (If
Available)......................................................... 525
SiriusXM® Satellite Radio (If Activated)........................................................ 523
Sources.................................................................. 522
Stereo or USB..................................................... 529
Supported Media Players, Formats and Metadata Information................................ 530
USB Ports............................................................. 530
Environment.....................................................19
Essential Towing Checks..........................305 Before Towing a Trailer..................................... 313
Dynamic Hitching Using the Rear View Camera System............................................ 306
Hitches................................................................... 307
Integrated Trailer Brake Controller...............310
Launching or Retrieving a Boat or Personal Watercraft (PWC)......................................... 314
Safety Chains..................................................... 309
Trailer Brakes...................................................... 309
Trailer Lamps........................................................ 313
Trailer Towing Connector............................... 305
When Towing a Trailer...................................... 313
Event Data Recording See: Data Recording.............................................. 11
Export Unique Options
.................................18
Extending the Remote Start Duration........................................................140
Exterior Mirrors
................................................96
Blind Spot Information System...................... 99
Clearance Lamps ................................................ 98
Direction Indicator Mirrors ............................... 98
Fold-Away Exterior Mirrors............................... 96
652
Super Duty (TFE) Canada/United States of America, enUSA, Edition date: 202008, Third-Printing- Index

Heated Exterior Mirrors .....................................
98
Memory Mirrors ................................................... 98
Power Exterior Mirrors........................................ 96
PowerScope ™ Power Telescoping
Mirrors.................................................................. 97
Puddle Lamps....................................................... 98
Spot Lamps........................................................... 98
Telescoping Mirrors.............................................. 97
Trailer Towing Camera System....................... 98
F
Fastening the Seatbelts..............................39
Fastening the Cinch Tongue............................ 40
Seatbelt Locking Modes..................................... 41
Using Seatbelts During Pregnancy...............40
Using the Seatbelt with Cinch Tongue (Front Center Seat on Super Cab and
Crew Cab).......................................................... 39
Flat Tire See: Changing a Road Wheel....................... 429
Floor Mats
.......................................................323
Fog Lamps - Front See: Front Fog Lamps........................................ 89
Foot Pedals See: Adjusting the Pedals................................. 84
Ford Credit
.........................................................15
US Only..................................................................... 15
Ford Protect...................................................563 Ford Protect Extended Service Plan
(CANADA ONLY).......................................... 564
Ford Protect Extended Service Plans (U.S. Only).................................................................. 563
Four-Wheel Drive
..........................................213
Front Axle Fluid Capacity and Specification..............................................466
Front Fog Lamps
............................................89
Front Fog Lamp Indicator................................. 89
Switching the Front Fog Lamps On or Off........................................................................\
. 89
Fuel and Refueling
.......................................184
Fuel Consumption........................................193
Advertised Capacity.......................................... 193
Fuel Economy...................................................... 193
Fuel Filter - 6.2L/7.3L..................................382
Fuel Quality - Diesel.....................................187 Biodiesel................................................................ 188
Diesel Fuel Additives ........................................ 189Fuel Requirements - Choosing The Right
Fuel: Vehicles Operated Where Ultra Low
Sulfur Diesel Fuel Is Not Required ..........187
Fuel Requirements - Choosing The Right Fuel: Vehicles Operated Where Ultra Low
Sulfur Diesel Fuel Is Required (United
States/Canada/Puerto Rico/U.S. Virgin
Islands And Other Locales) ...................... 187
Fuel Quality - E85........................................185 Choosing the Right Fuel - Flex Fuel
Vehicles............................................................. 185
Switching Between E85 and Gasoline............................................................ 186
Fuel Quality - Gasoline..............................186 Choosing the Right Fuel.................................. 186
Fuel Shutoff...................................................326
Fuel Tank Capacity - Diesel.....................457
Fuel Tank Capacity - Gasoline...............458
Fuses
................................................................339
Fuse Specification Chart..........................339 Engine Compartment Fuse Box................... 339
Passenger Compartment Fuse Panel.................................................................. 343
G
Garage Door Opener
...................................164
Garage Door Opener See: Universal Garage Door Opener...........164
Gauges ..............................................................
102
DEF Gauge............................................................ 104
Engine Coolant Temperature Gauge..........104
Engine Oil Pressure Gauge............................. 104
Fuel Gauge............................................................ 104
Transmission Fluid Temperature Gauge................................................................. 104
Turbo Boost Gauge............................................ 104
Type 1 and 2.......................................................... 102
Type 3..................................................................... 103
Gearbox See: Transmission.............................................. 207
General Information on Radio Frequencies...................................................55
Intelligent Access................................................. 55
General Maintenance Information.......565 Multi-Point Inspection..................................... 568
Owner Checks and Services......................... 566
Protecting Your Investment........................... 565
653
Super Duty (TFE) Canada/United States of America, enUSA, Edition date: 202008, Third-Printing- Index

Why Maintain Your Vehicle?.........................
565
Why Maintain Your Vehicle at Your Dealership?..................................................... 565
Getting Assistance Outside the U.S. and Canada.........................................................335
Getting the Services You Need...............332 Away From Home.............................................. 332
Global Opening..............................................96
Opening the Windows....................................... 96
H
Handbrake See: Parking Brake............................................. 225
Hazard Flashers...........................................326
HDC See: Using Hill Descent Control.................... 232
Headlamp Adjusting See: Adjusting the Headlamps...................... 381
Headrest See: Head Restraints.......................................... 151
Head Restraints
..............................................151
Adjusting the Head Restraint......................... 152
Heated Seats.................................................160 Rear Heated Seats............................................. 160
Heated Steering Wheel
................................82
Heating See: Climate Control - Vehicles With:
Automatic Temperature Control.............143
See: Climate Control - Vehicles With: Manual Temperature Control.................................... 147
Hill Start Assist.............................................225 Switching the System On and Off..............226
Using Hill Start Assist....................................... 226
Hints on Driving With Anti-Lock Brakes............................................................225
Hood Lock See: Opening and Closing the Hood..........348
Horn.....................................................................83
How Does the Rear Occupant Alert System Work
...............................................162
Hydraulic Power Steering Fluid Capacity and Specification
......................................472
I
Identifying the Climate Control Unit..................................................................143 Ignition Switch................................................174
In California (U.S. Only).............................333
Information Display Control
.......................82
Information Displays....................................110
General Information........................................... 110
Information Messages
.................................121
4WD........................................................................\
. 138
Active Park.............................................................. 121
Adaptive Cruise Control.................................... 122
Adaptive Steering............................................... 123
AdvanceTrac and Traction Control..............123
Airbag...................................................................... 124
Alarm and Security............................................. 124
Automatic Engine Shutdown......................... 124
Battery and Charging System........................ 125
Blind Spot Information and Cross Traffic Alert System.................................................... 125
Diesel Messages.................................................. 126
Doors and Locks.................................................. 128
Driver Alert............................................................. 129
Drivetrain................................................................ 129
Engine..................................................................... 129
Fuel........................................................................\
.. 130
Keys and Remote Controls............................. 130
Lane Keeping System......................................... 131
Maintenance.......................................................... 131
MyKey...................................................................... 132
Off Road................................................................. 132
Park Aid................................................................... 133
Park Brake.............................................................. 133
Power Steering.................................................... 134
Pre-Collision Assist............................................ 134
Remote Start........................................................ 135
Seats........................................................................\
135
Starting System .................................................. 135
Tailgate................................................................... 135
Tire Pressure Monitoring System.................. 136
Trail Control.......................................................... 136
Trailer....................................................................... 137
Installing Child Restraints
...........................24
Child Seats.............................................................. 24
Combining Seatbelt and LATCH Lower Anchors for Attaching Child
Restraints........................................................... 30
Front Seat Tether Strap Attachment (Regular Cab).................................................... 31
Rear Seat Tether Strap Attachment (Crew Cab and Super Cab)....................................... 32
654
Super Duty (TFE) Canada/United States of America, enUSA, Edition date: 202008, Third-Printing- Index

Pre-Collision Assist.....................................264
Adjusting the Pre-Collision Assist
Settings............................................................ 266
Blocked Sensors................................................. 267
Distance Indication and Alert....................... 265
Using the Pre-Collision Assist System.............................................................. 264
Protecting the Environment
........................19
Puncture See: Changing a Road Wheel....................... 429
R
Radio Frequency Certification Labels...........................................................584
Blind Spot Information System Sensors............................................................ 584
Body Control Module....................................... 587
Cruise Control Module.................................... 590
Keys and Remote Controls............................ 594
Passive Anti-Theft System............................ 598
Radio Transceiver Module............................. 602
SYNC...................................................................... 605
Tire Pressure Monitoring System Sensors............................................................ 609
Wireless Accessory Charging Module.........613
Rear Axle Fluid Capacity and Specification - Diesel..............................467
Rear Axle - 10.5................................................... 467
Rear Axle - 10.8.................................................. 468
Rear Axle - 11.8 .................................................. 468
Rear Axle Fluid Capacity and Specification - Gasoline........................469
Rear Axle - 10.5.................................................. 469
Rear Axle - 10.8................................................... 470
Rear Axle - 11.8 ................................................... 470
Rear Axle - 11.8 (With Heavy Duty Tow Option)............................................................... 471
Rear Axle
..........................................................221
Rear Occupant Alert System Audible Warnings.......................................................163
Rear Occupant Alert System Indicators - Vehicles With: SYNC 3..........................163
Rear Occupant Alert System Indicators - Vehicles With: SYNC..............................163
Rear Occupant Alert System Limitations...................................................162 Rear Occupant Alert System
Precautions..................................................162
Rear Occupant Alert System...................162
Rear Parking Aid
...........................................234
Obstacle Distance Indicator.......................... 235
Rear Seats
.......................................................158
Folding Up the Rear Seat Cushion ..............158
Rear Under Seat Storage................................. 159
Returning the Seat to the Seating Position.............................................................. 159
Rear View Camera
.......................................235
Camera Guidelines............................................ 236
Obstacle Distance Indicator........................... 237
Rear Camera Delay............................................ 237
Using the Rear View Camera System........236
Rear View Camera See: Rear View Camera................................... 235
Recommended Towing Weights...........300 Calculating the Maximum Loaded Trailer
Weight for Your Vehicle.............................. 304
Refueling - Diesel
.........................................190
Dual Fuel Tanks................................................... 192
Fueling Tips............................................................ 191
Refueling................................................................. 191
Refueling - Gasoline
....................................189
Fuel Filler Cap...................................................... 190
Remote Control..............................................55 Car Finder............................................................... 60
Integrated Keyhead Transmitter..................... 55
Intelligent Access Key.........................................56
Memory Feature................................................... 59
Replacing the Battery......................................... 57
Sounding the Panic Alarm............................... 60
Remotely Starting the Engine
.................140
Remotely Stopping the Engine................141
Remote Start Limitations.........................140
Remote Start Remote Control Indicators.......................................................141
Remote Control Feedback............................... 141
Remote Start
.................................................140
Remote Start Settings....................................... 141
Remote Start Settings
.................................141
Setting the Remote Start Duration..............142
Switching Climate Control Auto Mode On
and Off................................................................ 141
Switching Climate Control Last Settings On and Off......................................................... 141
657
Super Duty (TFE) Canada/United States of America, enUSA, Edition date: 202008, Third-Printing- Index

Voice Settings......................................................
521
Utilizing the Mediation/Arbitration Program (Canada Only)........................335
V
Vehicle Care
....................................................391
General Information.......................................... 391
Vehicle Identification Number
................473
Locating the Vehicle Identification
Number............................................................. 473
Vehicle Identification Number Overview........................................................... 473
Vehicle Identification
..................................473
Vehicle Identification Number...................... 473
Vehicle Storage
............................................399
Body....................................................................... 399
Brakes................................................................... 400
Cooling system.................................................. 400
Disconnecting Your 12 Volt Battery............400
Engine................................................................... 400
Fuel system......................................................... 400
General.................................................................. 399
Miscellaneous.................................................... 400
Removing Vehicle From Storage................400
Tires....................................................................... 400
Vehicle Wi-Fi Hotspot
................................478
Ventilated Seats............................................161
Ventilation See: Climate Control - Vehicles With:
Automatic Temperature Control.............143
See: Climate Control - Vehicles With: Manual Temperature Control.................................... 147
Voice Control
...................................................82
W
Warning Lamps and Indicators...............105 Adaptive Cruise Control................................... 105
Adaptive Steering............................................... 105
Anti-Lock Braking System.............................. 105
Automatic High Beam...................................... 105
Battery.................................................................... 106
Blind Spot Monitor............................................ 106
Brake System Warning Lamp........................ 106
Check 4X4............................................................ 106
Check Fuel Cap................................................... 106
Cruise Control...................................................... 106Diesel Engine Brake...........................................
106
Diesel Exhaust Fluid.......................................... 106
Direction Indicator.............................................. 107
Door Ajar................................................................ 107
Electronic Locking Differential....................... 107
Engine Coolant Temperature......................... 107
Engine Oil............................................................... 107
Fasten Seatbelt................................................... 107
Four-Wheel Drive Indicators.......................... 109
Front Airbag.......................................................... 107
Front Fog Lamps................................................. 107
High Beam............................................................. 107
Hill Descent........................................................... 107
Low Fuel Level..................................................... 107
Low Tire Pressure Warning.............................. 107
Powertrain Malfunction/Reduced Power/Electronic Throttle Control.........108
Service Engine Soon......................................... 108
Stability Control.................................................. 108
Stability Control Off.......................................... 108
Tailgate Ajar......................................................... 108
Transmission Tow/Haul................................... 108
Wait To Start........................................................ 108
Water In Fuel........................................................ 108
Washer Fluid Check....................................382
Washer Fluid Specification.......................461
Washers See: Cleaning the Exterior.............................. 392
See: Wipers and Washers................................. 85
Waxing.............................................................393
What Is Automatic High Beam Control............................................................93
What Is Cruise Control...............................242 Requirements...................................................... 242
What Is Remote Start.................................140
What Is the Cabin Air Filter.......................150
What Is the Gross Axle Weight Rating.............................................................272
GAWR (Gross Axle Weight Rating).............272
What Is the Gross Combined Weight Rating.............................................................273
What Is the Gross Vehicle Weight Rating.............................................................272
What Is the Maximum Loaded Trailer Weight...........................................................272
What is the Rear Occupant Alert System...........................................................162
What Is Trail Control....................................231
662
Super Duty (TFE) Canada/United States of America, enUSA, Edition date: 202008, Third-Printing- Index